linux-kernel - Re: [PATCH] fs/coda: remove static inline forward declarations

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Message-ID: <Pine.LNX.4.61.0802131052520.4866@chaos.analogic.com>
Date:	Wed, 13 Feb 2008 10:55:35 -0500
From:	"linux-os (Dick Johnson)" <linux-os@...logic.com>
To:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
Cc:	<jaharkes@...cmu.edu>, "Andrew Morton" <akpm@...ux-foundation.org>,
	"LKML" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] fs/coda: remove static inline forward declarations


On Wed, 13 Feb 2008, [iso-8859-1] Ilpo Järvinen wrote:

> On Wed, 13 Feb 2008, linux-os (Dick Johnson) wrote:
>>
>> On Wed, 13 Feb 2008, [iso-8859-1] Ilpo Järvinen wrote:
>>
>>> They're defined later on in the same file with bodies and
>>> nothingin between needs them.
>>>
>>> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
>>> ---
>>> include/linux/coda_linux.h |    3 ---
>>> 1 files changed, 0 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/include/linux/coda_linux.h b/include/linux/coda_linux.h
>>> index 1c47a34..31b7531 100644
>>> --- a/include/linux/coda_linux.h
>>> +++ b/include/linux/coda_linux.h
>>> @@ -43,9 +43,6 @@ int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
>>> int coda_setattr(struct dentry *, struct iattr *);
>>>
>>> /* this file:  heloers */
>>> -static __inline__ struct CodaFid *coda_i2f(struct inode *);
>>> -static __inline__ char *coda_i2s(struct inode *);
>>> -static __inline__ void coda_flag_inode(struct inode *, int flag);
>>> char *coda_f2s(struct CodaFid *f);
>>> int coda_isroot(struct inode *i);
>>> int coda_iscontrol(const char *name, size_t length);
>>> --
>>> 1.5.2.2
>>>
>>
>> I was taught formally that all procedures must be declared
>> before they are encountered in a file. This constitutes what
>> is generally known as "good standards of engineering practice."
>> It also guarantees a compiler diagnostic if the declaration and
>> the function doesn't match.
>
> They still are declared before they are used (the other two functions are
> similar to this randomly picked example):
>
> $ grep "coda_i2f" include/linux/coda_linux.h
> static __inline__ struct CodaFid *coda_i2f(struct inode *);
> static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
>
> I removed the first one of these. The latter is followed by the body of
> the function.
>
> By using some fuzzy word like "encountered" you just make your point
> obscure enough so that I cannot follow what you're trying to say. If you
> refer to use of the function by "encountering", then that property is
> still maintained and we still get all the type-checking and so on (even
> after this removal).
>
>> You should not remove things just because you don't think they
>> are necessary. They do no harm and removing them can cause
>> code checking tools to issue diagnostic messages.
>
> Do you really think so? I mean in this specific case, did you even
> bothered to check the file before hitting the send button? ...I just fail
> to see what is your point in keeping these three because they're declared
> later on in the same file, though with the body at that time. Do you also
> claim that all the other ~5000+ static inlines with body in kernel headers
> (but not forward declared) are not following those "good standards" you're
> asking for (they certainly won't issue extra diagnostic messages)?
>
>
> -- 
> i.
>

Have you EVER seen the diagnostic message, "function is not a prototype?"

It's rhetorical. You don't have to answer. Furthermore "encountered" is
not fuzzy.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.22.1 on an i686 machine (5588.28 BogoMips).
My book : http://www.AbominableFirebug.com/
_

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